Step 1: Prep your surface

Your surface can be any smooth surface, I just had a piece of glass around.

Now take a your choice of lubricant (bar soap for me), and cover the piece of glass.
This makes the removal easier later.

I also took a piece of brown paper to spread it around more. totally optional.

Step 2: Squirt your 'milk'

With the surface ready, take a bottle of white glue and 'draw' out your milk splatter.

You want to squirt out a nice thick layer of glue, that way it is easier to peel it off after it dries.

Step 3: Let it dry...

Now let it dry for a good 6 to 10 hrs.
You don't want to leave it close to a warm vent or anything, you'll get wrinkles on your milk!

Step 4: Time to peel

Once the glue dries, take a knife or anything with a sharp edge, and poke the edges around.
After the thin strips are free, it should be easy to peel off the whole thing off your surface.

Step 5: Sign up your victim for life insurance

Now with your milk splatter in hand, you can place it on anything you want without harming anything.
Try distracting your victim to the kitchen, then place the fake milk splatter on his/her laptop, and wait for some reaction!
Enjoy!

You can add some colors to your glue for other uses, red for fake blood puddle, green for slime, etc.

Haha I can't wait till my splatter dries! I'm targeting the roomie first and then my parents! I CAN'T WAIT TO SEE THEIR REACTION!! It'll be better than the one I got when I told everybody that I "Rolled Up the Rim to Win" and won Tobego!!! Some people actually congratulated me on winning=D